/Engine/Source/Runtime/GeometryFramework/Public/Components/BaseDynamicMeshSceneProxy.h
Update vertex uvs of an existing set of render buffers. Assumes that buffers were created with unshared vertices, ie three vertices per triangle, eg byInitializeBuffersFromOverlays()
template<typename TriangleEnumerable, typename UVOverlayListAllocator> void UpdateVertexUVBufferFromOverlays ( [FMeshRenderBufferSet](API\Runtime\GeometryFramework\Components\FMeshRenderBufferSet) * RenderBuffers, const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * Mesh, int32 NumTriangles, TriangleEnumerable Enumerable, const [TArray](API\Runtime\Core\Containers\TArray)< const FDynamicMeshUVOverlay *, UVOverlayListAllocator > & UVOverlays )